Answer:
Number of electrons, n = 6
Explanation:
Total charge in a single droplet, [tex]q=-9.6\times 10^{-19}\ C[/tex]
The measured charge of any single droplet, [tex]e=-1.6\times 10^{-19}\ C[/tex]
Let n is the number of excess electrons are contained within the drop. According to the quantization of charge :
[tex]q=ne[/tex]
[tex]n=\dfrac{q}{e}[/tex]
[tex]n=\dfrac{-9.6\times 10^{-19}}{-1.6\times 10^{-19}}[/tex]
n = 6
So, there are 6 electrons contained within the drop. Hence, this is the required solution.